I have been using the product for about two weeks before I go to bed. I started taking one pill as recommended on the bottle but, I upped my dosage to two pills after about a week. The product works very well. It's not going to produce miracles but, its still worth using. I like the tryptophan over melatonin and 5htp because it is assimilated by your body much better. When I wake up in the morning, I never feel drowsy.